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标准钻杆
| 接头
| 标准钻杆 | |
| eng.geol. | standard drill rod |
| 接头 | |
| automat. | connector |
| hydroel.st. | joint |
| mech. | adapter |
| met. | adaptor; connection; joint connection; tab |
| water.res. | coupling |
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| standard drill rod | |||
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标准钻杆 : 3 phrases in 3 subjects |
| Drilling | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |
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